import turtle as t,math
def caihong():

    t.pensize(12)
    color =["#FF00FF","#D8BFD8","#0000FF","#6495ED","#FFD700","#DAA520","#FF4500"]
    for i in range(7):
        t.left(90)
        r=100+10*i
        t.pencolor(color[i])
        t.circle(r,180)
        t.left(90)
        t.penup()
        t.fd(2*r+10)
        # t.left(90)
        t.pendown()

caihong()
